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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Several methods are proposed for the remediation of arsenic contaminated aquatic environment including the oxidation, precipitation, coagulation, membrane filtration etc. However, these methods are either expensive or not to address the stringent regulation as stated by the US-EPA i.e., 10 ppb (0.01 mg/L) in the water. Hence, in a line the present communication dealt with exploring the possibility of organically-modified sericite for the removal of arsenic from water bodies. The interlayer spacing of (002) plane was reported to be 10Å contained with exchangeable potassium ions within the interlayer gallery. This exchangeable potassium ion was exchanged with two different ionic cations viz., tetramethyl ammonium chloride (T) and dimethyldioctadecyl ammonium chloride (D) as to obtain the two different organo-sericite samples for each organic cations i.e., T1, T2 and D1, D2 where 1 and 2 indicated the organic cations introduced with 1 and 2 times of CEC (cation exchange capacity) of sericite. The batch data obtained showed that at pH around 4~5 a maximum removal of As(III) Ca. 40% and As(V) Ca. 60% occurred with sample T1 using 2mg/L of initial arsenic concentration. Samples T2, D1 and D2 comparatively showed less removal efficiency for arsenic. Further, the effect of ionic strength (from 0.0001 to 0.1mol/L of NaNO3) and the presence of phenol (0.5 to 3mg/L), showed that the uptake of the set ions i.e., As(III) and As(V) were almost un affected with the se changes. Column data obtained as to assess the applicability of the se solids under the dynamic conditions. Results obtained by column experiments showed that the maximum removal capacity for As(III) using sample T was found to be 0.8259mg/g.
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참고문헌 (17)
참고문헌 신청
Peacock, C. L. / 2005 / Surface complexation model for multisite adsorption of copper (Ⅱ) onto kaoloniote / Geochim. Et Cosmochim 69:3733~3745
Diwaker Tiwari / 2006 / Inorganic And Bio-Materials In The Removal/Speciation of Radiocesium And Radiostrontium : An Overview / Environmental Engineering Research 11(2)
Markarian, J. / 2005 / Automotive and packaging offer growth opportunities for nanocomposities / Plast. Addit. Compound :18~25
Xi, Y. / 2005 / Infrared spectroscopy of organoclays synthessized with the serfactant octad ecyltrimethylammionium bromide, Apec trochim / Acta part A 61:515~525
Tiwari, D. / 2007 / Removal behaviour of sericite for Cu(Ⅱ) and Pb(Ⅱ) from aqueous solution: batch and column studies / Sep. Sci. Technol 67:11~16
Diwaker Tiwari / 2006 / Inorganic And Bio-Materials In The Removal/Speciation of Radiocesium And Radiostrontium : An Overview / Environmental Engineering Research 11(2)
Markarian, J. / 2005 / Automotive and packaging offer growth opportunities for nanocomposities / Plast. Addit. Compound :18~25
Xi, Y. / 2005 / Infrared spectroscopy of organoclays synthessized with the serfactant octad ecyltrimethylammionium bromide, Apec trochim / Acta part A 61:515~525
Tiwari, D. / 2007 / Removal behaviour of sericite for Cu(Ⅱ) and Pb(Ⅱ) from aqueous solution: batch and column studies / Sep. Sci. Technol 67:11~16
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